Communications: electrical – Systems – Selsyn type
Reexamination Certificate
2006-03-06
2009-08-11
Philogene, Haissa (Department: 2821)
Communications: electrical
Systems
Selsyn type
C340S315000, C315S318000, C315S319000, C370S438000, C370S462000, C370S463000, C370S441000
Reexamination Certificate
active
07573372
ABSTRACT:
Control systems and methods for independent control of power systems, particularly lighting network branches, and separate control of individual branch components. Multi-branch systems comprise independently controllable branches that inter-communicate via PLC communications. In each branch, components such as ballasts, local control units, sensors, actuators, and repeaters, may exchange commands and queries independently of a branch remote control unit (BRCU). Alternatively, a BRCU may manage or arbitrate communications, or interact with other BRCUs, other control units and external management systems. Ballasts include a multi-channel ballast that enables close-loop control of individual fixtures, or of individual dimmable or non-dimmable lamps within a fixture. The close-loop control is facilitated by sampling circuits/sensors co-located with each controlled fixture or lamp. All controllers are preferably implemented using an integrated digital controller. The PLC communication is preferably carried out by a direct spread spectrum method that eliminates side lobes from a cross-correlation function, using an anti-collision protocol.
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Kuhlik Yuri
Lev Arie
Mogilner Rafael
Nogtev Boris
Rabinovitz Eytan
Friedman Mark M.
Philogene Haissa
Systel Development & Industries Ltd.
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